This is Part 4 of 4 transcripts from the Patuxent Science Symposium, 75th Anniversary of the Patuxent Science Center. It includes speakers who talk about their time at working at Patuxent and some of the work they did. This transcript includes the...

Lead (Pb) and its compounds have been known to man for about 7,000 years, and Pb poisoning has been recognized for at least 2,500 years. All credible evidence indicates that Pb is neither essential nor beneficial to living organisms, and that all...

This is a booklet that describes various migratory birds that are familiar in the United States. The species covered include the American robin, the American goldfinch, the Ruby-throated hummingbird, the eastern bluebird, the barn swallow, the gray...

This is a booklet describing laws pertinent to the importation and exportation of endangered animals--alive or dead--and animal parts and products. It includes contact information for obtaining more specific information on the subject.

The Mancos milkvetch (Astraualus humillimus Gray ex. Brandegee) was listed as an endangered species on June 27, 1985 (USFWS 1985a) by the U.S. Fish and Wildlife Service. The species is known from northwestern New Mexico and southwestern Colorado...

In the world of North American woodpeckers, red-cockaded woodpeckers stand out as an exception to the usual rules. They are the only woodpeckers to excavate nest and roost sites in living trees. Living in small family groups, red-cockaded...